Harden backup JSON parsing and fix queue display

services/queue.py

@@ -41,30 +41,30 @@ async def worker():
 
 def format_status() -> str:
     pending = list(_pending)
-    lines = ["?? Queue"]
-    lines.append(f"?? Running: {_current_label or 'idle'}")
-    lines.append(f"? Pending: {len(pending)}")
+    lines = ["🧾 Queue"]
+    lines.append(f"🔄 Running: {_current_label or 'idle'}")
+    lines.append(f"⏳ Pending: {len(pending)}")
     if pending:
         preview = ", ".join([p[0] for p in pending[:5]])
-        lines.append(f"?? Next: {preview}")
-    return "".join(lines)
+        lines.append(f"➡️ Next: {preview}")
+    return "\n".join(lines)
 
 
 def format_details(limit: int = 10) -> str:
     now = time.time()
-    lines = ["?? Queue details"]
+    lines = ["🧾 Queue details"]
     if _current_label:
         started_at = _current_meta.get("started_at") if _current_meta else None
         runtime = f"{int(now - started_at)}s" if started_at else "n/a"
-        lines.append(f"?? Running: {_current_label} ({runtime})")
+        lines.append(f"🔄 Running: {_current_label} ({runtime})")
     else:
-        lines.append("?? Running: idle")
+        lines.append("🔄 Running: idle")
 
     pending = list(_pending)
-    lines.append(f"? Pending: {len(pending)}")
+    lines.append(f"⏳ Pending: {len(pending)}")
     if pending:
-        lines.append("?? Position | Label | Wait")
+        lines.append("🔢 Position | Label | Wait")
         for i, (label, enqueued_at) in enumerate(pending[:limit], start=1):
             wait = int(now - enqueued_at)
             lines.append(f"{i:>3} | {label} | {wait}s")
-    return "".join(lines)
+    return "\n".join(lines)